Ross is a General in the Air Force who is in charge of Bruce Banner's aka the Hulk gamma bomb project. His daughter, Betty, takes a liking to the young scientist, a fact which only enhances the dislike the rough Ross has for the "weakling" scientist Banner. After Banner's transformation into the Hulk, Ross spends years chasing the monster, becoming obsessed enough with it to commit treason by allying himself with the Leader, M.O.D.O.K., and the Abomination in order to destroy the Hulk. Dishonorably discharged, he shows up at Betty and Bruce's wedding with a gun, and shoots Rick Jones. He is recruited by S.H.I.E.L.D. agent Clay Quartermain to merge with the electric creature Zzzax, a process that gives Ross superpowers, but also makes him mentally unstable. He is later restored to human form but retains some residual energy-generating powers. This makes him a different Hulk than normal.
Clash with the Eternals
While fighting a genetically engineered Hydra created by Zero/One, Rulk was being watched by the Eternals to know what to make of him, a heroic being or an enemy. After the battle was over, Sersi who was on site asked about what was going on, however, Red Hulk could see she was not a human and thought she was a spy sent by Zero/one.